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$353+ Cheap flights from Ontario (ONT) to Singapore

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Find flight deals from Ontario to Singapore

Cheapest flights from Ontario to Singapore
Explore the most affordable flight options available from Ontario to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This Korean Air deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:45 amONT - SIN
2 stops25h 25mKorean Air
Sun 11/231:35 amSIN - ONT
2 stops37h 20mKorean Air
Deal found 10/22$739
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/211:59 pmONT - SIN
2 stops32h 51mAmerican Airlines
Mon 11/108:15 amSIN - ONT
2 stops26h 06mAmerican Airlines
Deal found 10/22$759
This Kissandfly.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amONT - SIN
1 stop22h 15mLufthansa
Sun 12/1410:10 amSIN - ONT
1 stop18h 08mLufthansa
Deal found 10/20$769
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/166:00 amONT - SIN
1 stop22h 15mUnited Airlines
Fri 11/2810:10 amSIN - ONT
1 stop25h 31mUnited Airlines
Deal found 10/21$784
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amONT - SIN
1 stop22h 15mUnited Airlines
Sun 11/1610:20 pmSIN - ONT
1 stop30h 17mUnited Airlines
Deal found 10/21$789
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:32 pmONT - SIN
2 stops39h 43mUnited Airlines
Sat 11/2210:20 pmSIN - ONT
1 stop35h 14mUnited Airlines
Deal found 10/22$794
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:05 amONT - SIN
2 stops27h 50mUnited Airlines
Tue 11/1110:10 amSIN - ONT
1 stop23h 24mUnited Airlines
Deal found 10/21$796

Cheap flight deals from Ontario to Singapore

Keep the following information in mind while searching for Ontario to Singapore flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$734
(Delta)

One-way from

$353
(Jettzy)

Popular in

December

Cheapest in

September

Average price

$792
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Singapore Changi flights.
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From Ontario to Singapore
Search Deals
One-way flight from Ontario to Singapore
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Ontario

Fly to

Singapore

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 4/6

6:45 am-5:00 am

2 stops31h 15m

Singapore Changi

Mon 4/27

10:30 pm-10:40 pm

2 stops39h 10m

$734

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 11/17

6:45 am-5:00 am

2 stops30h 15m

Singapore Changi

Sun 11/23

1:35 am-5:09 pm

2 stops31h 34m

$739

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 2/6

6:45 am-12:10 am

2 stops25h 25m

Singapore Changi

Fri 3/20

10:40 am-10:38 pm

2 stops50h 58m

$739

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/12

6:45 am-11:40 pm

2 stops25h 55m

Singapore Changi

Wed 4/15

10:30 pm-10:40 pm

2 stops39h 10m

$739

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/5

6:45 am-11:40 pm

2 stops25h 55m

Singapore Changi

Tue 4/7

1:10 am-5:15 pm

2 stops31h 05m

$739

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 2/1

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Mon 2/16

10:10 am-5:41 pm

1 stop23h 31m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 11/11

1:40 pm-8:00 am

1 stop26h 20m

Singapore Changi

Wed 11/19

10:10 am-12:37 pm

1 stop18h 27m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 11/3

6:38 pm-8:00 am

1 stop21h 22m

Singapore Changi

Wed 11/19

10:10 am-5:34 pm

1 stop23h 24m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 1/28

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Thu 2/12

10:10 am-12:38 pm

1 stop18h 28m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 11/6

6:38 pm-8:00 am

1 stop21h 22m

Singapore Changi

Thu 11/27

10:10 am-5:34 pm

1 stop23h 24m

$784

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 22 results
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Best time to book a flight from Ontario to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Singapore

What is the cheapest month to book a flight from Ontario to Singapore?

Currently, February is the cheapest month in which you can book a flight from Ontario to Singapore (average of $582). Flying from Ontario to Singapore in June is currently the most expensive (average of $772). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SG?

Find hourly flight availability from Ontario to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Singapore in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated October 22, 2025.
See what other customers who have flown with STARLUX Airlines, China Airlines, and United Airlines from Ontario to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
STARLUX Airlines
8.9
Very good
219 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
China Airlines
8.3
Very good
773 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
United Airlines
7.4
Good
8,988 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Food

8.7

Comfort

8.9

Crew

9.2

Boarding

8.9

Entertainment

8.8

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Related info for your journey

Find useful and relevant information for your journey from Ontario to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Singapore?

    If you book a flight to Singapore from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Singapore?

    A quick flight from Ontario to Singapore can take about 30h 15m. Delta provides one of the quickest options available for as low as $739. There are 8791 mi between Ontario and Singapore. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ontario to Singapore that include hotel bookings?

    Yes. In addition to deals on Ontario to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Singapore.

  • Can I find deals for business class flights from Ontario to Singapore?

    Yes. Cheapflights offers flight deals from Ontario to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Singapore?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Singapore (average of $582). Flying from Ontario to Singapore in June is currently the most expensive (average of $772). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Ontario to Singapore

Discover the top 3 airlines that operate flights from Ontario to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$796Average$1,189FlexibilityNo cancel feeOn-time69%
STARLUX AirlinesCheapest$887Average$1,378FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$970Average$1,160FlexibilityNo cancel feeOn-time70%

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